The Ice Q is ur best bet if your willing to pay the premium for the cooling, otherwise i personally would go for the Sapphire one as Sapphire IMO are top build quality their cooling solutions are better than most.

I have two of the Sapphires used for the last year; no issues and overclocked well. Only swapping out as mainly as I wanted more VRAM and GTX 480s are great deals right now. Selling both of them for $210 shipped I think just haven't posted them up yet.